Sewing-machine for barring button-holes



7 7 SheetsSheet 1.

(No Model.)

H. H. CUMMINGS. SEWING MQGHINE FOR EARRING BUTTON HOLES. .No. 435,686.

Patented Sept. 2, 1890.

Am/44 W 7 Sheets-Sheet 2.

(No Model.)

H. H. CUMMINGS.

I SEWING MACHINE FOR EARRING BUTTON HOLES. No. 435,686.

Patented Sept. 2, 1890.

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(No Model.) 7 Sheets-Sheet 3.

H. H. CUMMINGS. SEWING MACHINE FOR EARRING BUTTON HOLES.

No. 435,686. Patented Sept. 2, 1890.

\A/lT'NESSES-n INVENT (No Model.) 7 Sheets-Sheet 4.

H. H. CUMMINGS. SEWING MACHINE FOR BARRING BUTTON HOLES.

No. 435,686. Patented Sept. 2, 1890.

7 Sheets-Sheet 5.

' (No Model.)

H. H. CUMMINGS. SEWING MACHINE FOB EARRING BUTTON HOLES.,

No. 435,686. Patented Sept, 2, 1890.

7 Sheets-Sheet 6.

H. H. CUMMINGS. SEWING MACHINE FOR EARRING BUTTON, HOLES.

(No Model.)

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(No Model.) 7 Sheets-Sheet 7.

H. H. CUMMINGS. SEWING MACHINE FOR EARRING BUTTON HOLES.

No. 436,686. Patented Sept. 2,1890;

' INVENTU \A/ITNESSESH' UNITED STATES PATENT OFFICE.

HENRY II. CUMMINGS, OF MALDEN, ASSIGNOR TO THE UNION BUTTON SEWINGMACHINE COMPANY, OF BOSTON, MASSACHUSETTS.

SEWING-MACHINE FOR BARRING BUTTON-HOLES.

SPECIFICATION forming part of Letters Patent No. 435,686, datedSeptember 2, 1890.

Application filed April 2, 1889.

To all whom it may concern.-

Be it known that I, HENRY H. CUMMINGS, of Malden, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Barring and Tacking Sewing-Machines, of which thefollowing is a specification.

My invention has relation to that class of sewing-machines commonlyknown as barring or tacking machines-that is, machines adapted to form abar or tacking at the base or across the inner end of a buttonhole, theends of pockets, &c.said bar being commonly formed by taking one or morelong stitches at the point and in the direction that the bar is to bemade and then stitching back and forth across such long stitches fromend to end thereof.

My invention consists of improvements in machines of the classaforesaid, whereby their construction is greatly simplified, theiroperation rendered certain, and their adjustments readily effected, allas is hereinafter fully de scribed, and pointed out in the appendedclaims.

In the drawings hereunto annexed and forming a part of thisspecification, Figure 1 is a side elevation of a machine embodying myimprovements. Fig. 2 is a top plan view of the same, the overhanging armand its attached parts being removed or cut away. Fig. 3 is a bottomplan view. Fig. 4 is a top plan view of a portion of the parts shown inFig. 2. Fig. 5 is a sectional View taken on the line 5 5, Fig. 3. Fig. 6is a sectional view taken on the line 6 6,Fig. 2. Fig. '7 is a sectionalview similar to Fig. 6, but showing some of the parts in a differentposition. Fig. 8 is a sectional detail view of the cloth-plate-actuatingcam and its immediately-associated parts. Fig. 9 is a sectional detailview taken on the line 9 9 of Fig. 4. Fig. 10 is a sectional detail viewtaken on the line 1O 10 of Fig. 4:. Fig. 11 is a bottom plan view of thelever immediately connected with the cloth-plate and support to actuatethe same. Fig. 12 is a diagram showing the character of the stitchingperformed.

The same letters and figures designate the same parts in all of' theviews.

In the drawings, A designates the bed of the machine; 13, theoverhanging arm; 0, the

Serial No. 305,735. (No model.)

main shaft; D, the driving-pulley on the main shaft; E, the shuttlemechanism on the forward end of the main shaft; F, the needle-bar; G,the needle; II, the needle-bar-operating shaft; I, the pitman connectingthe shaft II with the main shaft; J, the eccentric on the main shaft foractuating the pitman I; K, the

presser-bar, and L the presser-foot.

All of the parts so far mentioned constitute a sewing mechanism and maybe of common construction and function.

a designates a reciprocating cloth-plate, be-

tween which and the presser-foot L the cloth to be operated upon isclamped, the presserbar being loosely hung in any appropriate manner toadapt it to travel in any direction with said cloth-plate. Thecloth-plate is first given reciprocating movements in the direction ofthe arrow 2 (see Figs. 2 and at) to form the long stitches 7, Fig. 12,and then a reciprocating movement in the direction of the arrow 3 and aslow advancing movement in the direction of the arrow 4; to form thestitches 8 across the stitches 7 to complete the bar. The means toproduce these functions will first be described.

I) designates a slide provided with gibs 0, upon which slide and betweenwhich gibs the cloth-plate a is adapted to operate in its reciprocatingmovements in the direction of the arrow 2, the slide Z) beingconstructed and arranged to move on thebed-plate so as to reciprocatethe cloth-plate a in the direction of the arrow 3. (See Figs. 2, 3, 10and 11.)

d designates an elbowlever fulcrumed at 6 upon the slide 1) and providedon what is here shown as its short arm. with a stud f, squared at itslower end, which squared portion of said stud extends through a slot ornotch g, formed in the cloth-plate a.

h designates a pitman or rod connected at its forward end with theelbow-lever d at its fulcrum-point e and adjustably pivoted at itsrearward end to a lever i, fulcrumed at j upon the bed of the machine,Figs. 2, 6, and 7. Said lever i is provided on its end opposite itsfulcrum-point with a stud 7a, which extends down through a slot 1 in thebed of the machine and into a cam-groove m formed in the upper face of ahorizontally-arranged gear n, driven by a gear 0, Fig. 3, on the mainshaft 0.

19 designates a rod or pitman adj ustably connected at one end with thelong arm of elbow-lever d and pivoted at its opposite end to the forwardend of a lever q, fulcrumed upon a stud 7', which extends looselythrough lever 7; and through a slot in the bed of a machine. Lever q isprovided on the under face of its forward end with a recess or notch 8,adapted to receive a stud t, projecting up from the forward end of leveri, so that by moving lever q down upon lever 2' said two levers may beconnected and operated practically as one lever, andwby raising lever qitmay be disconnected from lever 1', so that the former may be operatedon stud r as a fulcrum and the latter upon stud j, moving lever qslightly at the same time. It will now be seen that if levers q and ishould be connected and the machine should be operated cloth-plate awould be moved in the direction of the arrow 2, Figs. 2 and 4, to formlong stitches 7 and slightly in the direction of the arrow 3, so as tolay said long stitches 7 in a diagonal direction, (see Fig. 12,)considered with respect to the cloth-plate and the needle-slot formedtherein, and if lever q should be raised to the position in which it isrepresented in Fig. 7 it would be disconnected from levert' and thecloth-plate a would be reciprocated through the medium of rod hand itsactuating mechanism only in the direction of arrow 3, forming the shortstitches 8 across the long stitches 7. Now, after forming the longstitches 7 and beginning to form the short, cross, or binding stitches 8the cloth-plate should be gradually advanced (as is done in'this myinvention) from its rearward to its forward position, the cross orbinding stitches 8 may be made over the long stitches 7 from end to endof the latter. The means by which these functions are accomplished by myimprovements will next be described.

a designates a lever fulcrumed at o beneath the bed of the machine andprovided a little rearward of its fulcrum-point with alaterallyextending dog 20, adapted to engage a screwthread 00, formed onthe periphery of an enlarged hub of or disk y, attached to gear 77..Said dog w is pivoted to lever to, and its free end is forced upward bya spring 2, secured to lever to and bearing on the'outer end of the dog.A set-screw a, tapped through the dog and bearing at its upper endagainst the lever it, affords a means for adjusting the dog so that itsfree end may be made to engage a greater or less number of thescrew-threads 0c, counting from the bottom, all of which will be clearlyunderstood by an inspection of Fig.5 of the drawings. A spring I) isattached at one end to the bed of the machine and at the other end tothe arm or portion of the lever it beyond the fulcrum-point o, to whichthe dog w is attached, (see Fig. 3,) which spring tends to draw the dogw toward the huby of gear 71 and hold said dog in engagement. with thescrew-threads 00 or draw it under the hub y, as the case may be. The

wheel g on the shaft f on the lug Z inner upper edge of lever u isbeveled or provided with 7 an inclined cam-swell 0 near the point wherethe dog 10 is secured thereto, which beveled portion of the lever isarranged to move under the fulcrum-pin r of lever q and raise saidlever, as shown in Fig. 7, or to move out or partially out from undersaid pin 1' and allow lever q to be brought down on lever i, as it willbe by the action of spring (1, and so as to engage lug or pintwith notchor recess 8, as shown in Fig. 6. The end of lever 10 opposite that towhich spring bis attached thereto is provided with a dog (2, (see Fig.3,) adapted to be brought into or thrown out of engagement with ascrewthreaded hub or sleeve g connected with a broad ratchetwheel 9',turning loosely on the inner end of the shaft f, but not allowed tomoved longitudinally thereon. The shaft f is arranged in bearingsconnected with the machine-bed, so as to move longitudinally therein.

. h designates a pawl arranged to engage the teeth of ratchet-wheel gand to be actuated by an eccentric t" on the main shaft 0, the said pawlbeing held down in engagement with the teeth of said ratchet-wheel by aspring k Shaft f is provided with What I term a creeper j, whichconsists of an angular finger arranged to extend through a slot in,formed in the bed A, (see Figs. 4, 9, and10,) and to operate against adownwardly-extending lug Z, formed on the long arm of the elbowlever d,so that when the dog 6' is engaged with thescrewthreaded sleeve 9 ofratchetand said ratchetwheel and sleeve are rotated and the shaft isgradually moved longitudinally (as it will be under such circumstances)in the direction .of the arrow 5, Fig.

of elbow-lever d, will gradually move said lever on its fulcrum 6, so asto ad vance the cloth-plate a from its rearward to its forward position,or, in other words, in the direction of arrow 2, Figs. 2 and 4.Supposing now that the cloth or other material to be operated upon hasbeen clamped in proper position between the presser-foot L and thecloth-plate a, and the arm or end of lever u is drawn back in thedirection of the arrow 4, Fig, 3, against the tension of the spring I)and the dog 10 brought into engagement with the screw-thread won theperiphery of the hub or disk y of gear n, pin a" of lever q will haveridden down on the incline c of lever u and.

brought said lever g down upon lever t' and pin tof the latter leverinto engagement with o the notch or recess 5 of the former lever,permitting said levers to be actuated in unison. By the movement oflever 11. as aforesaid, dog 6 will have been disengaged from thescrewthreaded sleeve 9 and elbow-lever at will have been moved throughthe medium of rod 19 after lug t shall have engaged the notch or recess8, so that the lug Z shall have operated against the creeper j to moveshaft, f longitudinally in a direction opposite to the 3, the creeper j,acting arrow 5, Fig. 3. W'ith this adjustment orarrangementofpartsthemachinemaybe started, when the cam-groove m, actingon the stud it, will actuate the levers 2' q, and through the medium ofsaid levers the elbow-lever cl and the eonnect-ing-rodsp h reciprocatethe cloth-plate ain the direction of the arrow 2 and slightlyin thedirection of the arrow 3 to form the long diagonal stitches 7, Fig. 12.This operation will continue until dog 20 travels down and out ofengagement with screw-threads 00 on hub 3 and said dog is drawn undersaid hub by spring 1), moving lever u on its fulcrum o, bringing dog 6into engagement with the screw-threaded sleeve 9 and raising pin r bybringing incline c thereunder, so as to disconnect lever g from lever i,as shown in Fig. 7. The number of long diagonal stitches '7 which willbe taken will depend upon the number of screw-threads 0c of hub 3counting from the bottom, with which dog to is allowed by adjustingscrew 0/ to engage. With the parts in the position last described, uponthe further operation of the machine clothplate a will be actuated bylever z'and its connections and be in no wise aifected by the operationof lever (1, so that said clothplate will be reciprocated from side toside or in the direction of the arrow 3 and will be gradually advancedfrom its rearward position in the direction of the arrow 2, Fig. 2, bythe operation of the creeper j on the lug Z of elbow-lever d, wherebythe cross or binding stitches 8 will be formed across the long diagonalstitches '7, drawing in said long stitches at the ends thereof andforming a perfect bar or tack, as shown in Fig. 12. The length of thelong stitches 7, and consequently of the bar, will depend upon the pointof the long arm of elbow-lever d, at which the rod t is pivoted thereto,as will be readily understood by an inspection of Fig. 2. After thecross or binding stitches 8 shall have been taken along the longdiagonal stitches 7 the machine is stopped automatically, and this isaccomplished by the means which I will next describe.

m designates a lever fulcrumed at or beneath the bed of the machine andloosely connected at its inner end with. a longitudinally-movable rod 0and provided at its opposite end with an arm 19, adapted to move aclutch member q, splined on craft 0 into and out of engagement with aclutch-member r, connected with pulley D, arranged to turn loosely onsaid shaft. Rod 0 has a spring .9 connected therewith, which tends todraw said rod in the direction of the arrow 9, Fig. 3.

t, Figs. 1 and 3, designates a lever, of bellcrank form, fulcrumed onthe bed of the machine, the horizontal arm of which is constructed andarranged to engage a notch formed in rod 0. \Vhen said rod is moved in adirection opposite to arrow 9 and against the stress of spring .9, thevertical arm of said lever t projects up through a slot in the bed A andis provided on its upper end with a crosspin a, which extends in thepath of movement of the outer end of lever q, (see dotted lines in Fig.2,) when cloth-plate a is moved to its extreme forward position. Uponadjusting lever u, as shown in Fig. 3, the arm of lever m, connectedwith red 0, may be drawn outward in the direction of the arrow 4, movingrod 0 in a direction opposite to the arrow 9 and causing clutch member qto be engaged by the member 1", thus rotating main shaft 0. At the sametime the horizontal arm of elbow-lever t will catch into locked inoperative position until the creeper j moves the cloth-holder a to itsextreme forward position, which operation will bring the outer end oflever q into such position that it will strike the pin 11-, rockinglever t on its fulcrum and raising the horizontal arm of said lever outof the notch in rodo and allowing spring s to move said rod and lover m,so as to disengage the clutch member g from the member 0" and stop therotation of shaft 0. I

A chain or rod r, Fig. 3, may be attached to the end of lever u oppositethat provided with the dog 6, passed over a pulley w, and attached to atreadle (not shown) on the floor, whereby the parts may be adjusted inoperative position by the mere movement of the foot of the operator.

It is obvious that the form and arrange ments of parts constituting myimprovements may be varied without departing from the nature or spiritof the invention.

Having thus set'forth the nature and pur poses of my improvements inbarring and tacking machines, I declare that what I claim 1s- 1. In abarring and tacking machine, the combination, with a sewing mechanism,of a reciprocating slide and means for reciprocating the same, acloth-plate carried by and adapted to be reciproeated on said slide in aline at right angles to the line of movement of the latter, means forholding the cloth on the cloth-plate, an elbow-lever fulcrumed on saidslide and having one of its arms pivoted to said cloth-plate, a rodpivoted at the apex of said elbow-lever, a lever to which the other endof said rod is pivoted, and means for oscillating said lever andreciprocating the cloth-plate, as hereinbefore set forth.

2. In a barring and tacking machine, the combination, with a sewingmechanism, of a reciprocating cloth-plate, means for reciprocating thesame and means for holding the cloth on the plate, a slide carrying saidplate and constructed and arranged to be reciprocated at right angles tothe line of reciprocation of the cloth-plate, a rod pivotally connectedwith said slide, a lever to which the other end of said rod is pivoted,a stud proj ecting from said lever, another lever having aslot intowhich said stud engages, and means foroscillating the slotted lever, ashereinbefore set forth.

the notch formed in rod 0 and hold the parts" "mentioned rod toreciprocate said slide at right angles to the line of reciprocation ofsaid cloth-plate, as hereinbefore set forth.

4. In a barring and tacking machine, the combination, with a sewingmechanism, of the slide 0, the elbow-lever d, pivoted thereon,cloth-plate a, supported and adapted to mo ve upon said slide, one armof said lever (Z being pivoted to said cloth-plate, rod 19, pivotallyconnected with the other arm of said lever, rod h, pivotally connectedwith said elbowlever, lever i, pivotally connected with rod h andprovided with the studs 70 and t, lever g, Q provided with the stud 0',extending through lever c, and with the recess or notch s, and a lever'11, provided with the incline or cam c, as hereinbefore set forth.

5. In a barring and tacking machine, the combination of a reciprocatingslide and means for reciprocating the same, a clothplate supported uponsaid slide and adapted to be slid thereon, means for holding the clothon said plate, an elbow-lever pivoted on said slide having one armpivotally connected With said cloth-plate and a stud extending from thelonger arm of said lever, a longitudinally-movable shaft, and a fingerconnected with said shaft and adapted to bear against said stud and tomove said lever,

7 whereby the cloth-plate is slid at right angles to the slide, ashereinbet'ore set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 26th day of March, A. D.1889.

l HENRY H. CUMMINGS.

Witnesses:

ARTHUR W. ORossLEY, A. D. HARRISON.

